"If the vehicle is running, you step on the brake, hear shrill voice, it is necessary to pay attention to." Quality inspection experts said consumers in any of the following situations in the case, you must replace the brake disc:

(1) the brake pads is less than the thickness of the vehicle manufacturer allowed minimal repair standard time (usually left the original thickness of 1/3);

(2) on the brake pad wear alarm switch has alarm;

(3) the brake pads are most afraid of oil, if it is oil or oil pollution, must change;

(4) the brake pads on the brake when the abnormal noise;

(5) under normal circumstances, if the fixed type brake caliper brake pads on both sides of the thickness difference reached 1.5 mm, floating caliper brake pads on both sides of the thickness difference reached 3 mm and need to be replaced.